Finding the Third Proportional to 1,305,994 and 1,978,742.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,305,994 : 1,978,742.50 = 1,978,742.50 : x
2. Step 2: Convert to fraction form
   1,305,994/1,978,742.50 = 1,978,742.50/x
3. Step 3: Cross multiply
   1,305,994x = 1,978,742.50 × 1,978,742.50
4. Step 4: Simplify right side
   1,305,994x = 3,915,421,881,306.25
5. Step 5: Solve for x
   x = 3,915,421,881,306.25/1,305,994
6. Step 6: Final answer
   x = 2,998,039.72